Envoy Gateway proxy Deployment stuck (ProgressDeadlineExceeded) – xDS connection timeouts

[sbepari79]

The Envoy proxy deployment created by Envoy Gateway is not becoming ready. The pod is stuck in a degraded state with only 1/2 containers ready, and the deployment reports ProgressDeadlineExceeded.

From logs, Envoy is unable to connect to the xDS server (envoy-gateway service), resulting in repeated gRPC connection timeouts.

Envoy Gateway version: v1.7.2
Envoy image: docker.io/envoyproxy/envoy:distroless-v1.37.2
Kubernetes version: v1.32.5 (On-Prem)

Logs:
[warning][config] gRPC config: initial fetch timed out for type.googleapis.com/envoy.config.endpoint.v3.ClusterLoadAssignment

DeltaAggregatedResources gRPC config stream to xds_cluster closed:
upstream connect error or disconnect/reset before headers.
reset reason: connection timeout

Envoy is configured to connect to xDS server:
envoy-gateway.envoy-gateway-system.svc.cluster.local:18000

[zirain]

is the Envoy proxy on the node with the controller?
if not, is the cross node netwrok worked in your on-prem cluster?